package com.zzf.web.admin;

import com.zzf.po.Tag;
import com.zzf.po.Type;
import com.zzf.service.TagService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

@Controller
@RequestMapping("/admin")
public class TagController {

    @Autowired
    private TagService tagService;

    @GetMapping("/tags")
    public String tags(@PageableDefault(size = 3,sort = {"id"},direction = Sort.Direction.DESC)
                                Pageable pageable, Model model) {
        model.addAttribute("page", tagService.listTag(pageable));
        return "admin/tags";
    }

    @GetMapping("/tags/input")
    public String input(Model model) {
        model.addAttribute("tag", new Tag());
        return "admin/tags-input";
    }

    @GetMapping("/tags/{id}/input")
    public String editInput(@PathVariable Long id, Model model){
        model.addAttribute("tag", tagService.getTag(id));
        return "admin/tags-input";
    }

    @PostMapping("/tags")
    public String post(Tag tag, BindingResult result, RedirectAttributes attributes){

        Tag tagByName = tagService.getTagByName(tag.getName());
        if (tagByName != null) {
            result.rejectValue("name","nameError","分类不能重复添加");
        }

        if (result.hasErrors()){
            return "admin/tags-input";
        }

        Tag tag1 = tagService.saveTag(tag);
        if (tag1 == null) {
            //保存失败
            attributes.addFlashAttribute("message","新增失败");
        }else {
            //保存成功
            attributes.addFlashAttribute("message","新增成功");
        }
        return "redirect:/admin/tags";
    }

    @PostMapping("/tags/{id}")
    public String editPost(Tag tag, BindingResult result,@PathVariable Long id,RedirectAttributes attributes){

        Tag tagByName = tagService.getTagByName(tag.getName());
        if (tagByName != null) {
            result.rejectValue("name","nameError","分类不能重复添加");
        }

        if (result.hasErrors()){
            return "admin/tags-input";
        }

        Tag tag1 = tagService.updateTag(id,tag);
        if (tag1 == null) {
            //保存失败
            attributes.addFlashAttribute("message","更新失败");
        }else {
            //保存成功
            attributes.addFlashAttribute("message","更新成功");
        }
        return "redirect:/admin/tags";
    }

    @GetMapping("/tags/{id}/delete")
    public String delete(@PathVariable Long id,RedirectAttributes attributes){
        try {
            tagService.deleteTag(id);
        } catch (Exception e) {
            attributes.addFlashAttribute("message","删除失败!");
            return "redirect:/admin/tags";
        }
        attributes.addFlashAttribute("message","删除成功");
        return "redirect:/admin/tags";
    }
}
